(Ergonomic Design) With ergonomic design, ultra lightweight packable backpack has thickened and widened shoulder straps to reduce shoulder pressure on your shoulders and bring you good comfort. At the same time, the mesh back panel can improve air circulation to bring good breathability. (Moderate Size) Unlike those backpacks that are too large or heavy, our foldable is a moderate size, which provides enough accommodation space for outdoor travel, camping, hiking, trips and shopping.Rucksack Backpacks (Ultralight And Portable) Ultra lightweight packable backpack is only the size of the palm after storage, and the weight is light , which is small in size and light in weight. So it is suitable to be carried in a coat pocket when going out, which can provide additional storage space. (Good Waterproof Function) Our outdoor foldable backpack is made of waterproof nylon fabric, which has a good waterproof and moisture-proof function. So you don't have to worry about the items in the bag getting wet by the rain when you are outdoors. (Applicable To A Wide Range Of Scenarios) Our small waterproof rucksack is suitable for short trips, camping hiking, shopping and other scenarios, it is ideal for your outdoor activities.